Bottle-stopper



UNITED STATES PATENT OFFICE.

HENRY LIGIIllVARDT, JR, AND CHRISTIAN F. BACHLER, OF PHILADELPHIA, PENNSYLVANIA.

BOTTLE-STOPPER.

SPECIFICATION forming part of Letters Patent No. 410,421, dated September 3, 1889.

' Application filed June 20,1889. Serial No. 314,902. (No model.)

To all whom it may concern.- movahle section d is provided with a central Be it known that we, HENRY LIGHTWARDT, longitudinal opening, through which the stem Jr., and CHRISTIAN F. BACHLER, of Philadelextends, and with a lower flat face bearing on phia, in the county of Philadelphia and State the upper side of the elastic section, and this of Pennsylvania, have invented certain new section preferably tapers upwardly, and is and useful Improvements in Bottle-Stoppers; provided with an annular flange around its and we do hereby declare that the following upper edge to bear on the upper edge of the is a full, clear, and exact description of the mouth or neck of the bottle. The upper secinvention, which will enable others skilled in tion is pressed down to expand the elastic Io the art to which it appertains to make and use section by the winged nut e upon the outer the same, reference being had to the accomend of the threaded stem. The upper face of panying drawings, and to the letters of referthe upper section is provided with a depresence marked thereon, which form part of this sion or recess f around the central opening specification. thereof, in which a rubber or elastic Washer 15 Our invention relates to certain improveor section 9 is snugly fitted, embracing the ments in bottle-stoppers. stem and with its upper face located above The object of the invention is to provide the upper face of the end section d, and a an improved expanding bottle-stopper of that metallic washer or ring h embraces the stem, class composed of rigid sections and an inand is located on the upper face of the washer 2o terposed expansible section, which is exceedor elastic section g, so that when the nut is ingly cheap and simple in construction, and screwed down tight it presses down on the which, while provided with certain improvewasher h, and thereby expands the elastic ments to overcome certain defects, is comsection g 011 the outer end of section (1, thereposed of a minimum number of strong duraby causing the same to tightly fill the recess 25 ble parts, and can be easily and quickly opf and embrace the stem, so that whatever crated to lock itself in the neck of the bottle moisture or liquid that may collect on the or to release itself therefrom. upper end of the stopper cannot flow down These objects are accomplished by, and our around the stem and enter the bottle when invention consists in, certain novel features the stopper is unscrewed. This is a grave de- 0 of construction and combinations of parts, feet in the old stoppers now in use, as there more fully describedhereinafter, and particuis a moisture or liquid which collects on the larly pointed out in the claim. tops of the stoppers when in the bottles and Referring to the accompanying drawings, percolates down through the stopper around Figure 1 shows the neck of a bottle in secthe stem, and when the stopper was unscrewed 3 5 tion and the present stopper in elevation 10- this moisture and liquid would pass down into cated therein. Fig. 2 is an elevation of the the liquid in the bottle and spoil the flavor of stopper showing the expansible section conthe same; but this disadvantage is obviated tracted. Fig. 3 is a partial vertical section. by our stopper.

Fig. 4 is an elevation of the parts of the stop- On account of the small diameter of the 40 per separated and in position to be assembled. central stems of this class of stoppers, in

The stopper consists of a central stem or order to insure strength it has generally been metal bolt a, upon the lower end of which is found desirable to form the screwthread a head b, formed integral therewith, and havthereon of a very low pitch, and consequently ing a fiat upper face and tapering downthe operation of screwing and unscrewing the 45 wardly therefrom. The upper portion of the stoppers has taken considerable time and 5 central stem is screw-threaded, as shown. An many revolutions. In order to avoid this difelastic cylindrical section 0, formed of rubber ficulty, we form a single screw-thread of a or the like, embraces the central stem and high pitch on the stem and then another parbears on the flat face of the head on the lower allel thread on the stem between the convo- 50 end of the stem. The upper non -flexible lutions of the first thread, thereby forming a double thread of a high pitch, and the opening of the nutis provided with similar threads. Thus by reason of the high pitch of the threads the movement of the nut on the stem Will be very rapid with a minimum number of complete revolutions. It should also be observed that the durability and cheapness of the article is further attained by forming the lower rigid section and the stem integral.

What we claim isn In a bottle-stopper, the combination of a central stem, a rigid lower end section on the end of the stem, a movable upper non-flexible section, aninterposed elastic expansible section, means, substantially as described, on the upper end of the stem to force the our own We afliX our signatures in presence of two witnesses.

HENRY LIGI-ITWARDT, JR. CHRISTIAN F. BAOHLER. Witnesses:

GEORGE W. CLEMENT, HUGH A. LONER. 

